We can define morality as a system ofvalues or principles concerning what is right or wrong with respect to human behaviour. Morality can be viewed from two perspectives: descriptive or normative.
When we consider morality from a descriptive perspective, we are simply observing what a particular community believes to be right or wrong. We are offering no judgments or endorsements of these beliefs. We are describing things as they are.
When we approach a moral system from a normative perspective, we believe it to have an objective truth, or to set an ideal standard. We accept it and are invested in it. A moral code viewed in this light tells us how we should behave. Conduct that offends the code is considered immoral.
p. 11 Bottom.
Jurisprudence—the philosophy or science of law—and the theories that compose it are our concern in this section. There are many theoretical approaches to the law, and there is some overlap with justice theories. A common way of classifying theories of law is to divide them into two main categories: analytic and normative. Analytic theories are concerned with what the law is, while normative theories are concerned with what the law ought to be. The two are not mutually exclusive. There are hybrid theories—such as feminist legal theory—and other theories, such as legal realism, that seem to challenge or subvert the dis- tinction between analytic and normative.
Analytic jurisprudence generally concerns critical, explanatory, and value-free assess- ments of the law. It may involve, for example, examining the internal logic of a system of rules. Sometimes the investigations are more empirical in nature—that is, concerned with experience or observation rather than with theory. The common thread between analytic theories of law is that they do not involve value judgments. They are concerned with what law is, not what it ought to be.
In the context of philosophy (and not writing), how does 'descriptive' differ from 'analytic'? I can't spot any distinction from the overhead quotes, which ostensibly uses them both to signify 'critical, explanatory, and value-free assess- ments'.